[Tomuraya (Tomura Suisen)] Namaiki Boyish Shoujo ni Hatsujou Appli o Tsukattara...... | When I Used A Lust Inducing App On A Cocky Boyish Girl... [English] [Penguin Piper] [Digital]
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I take no credit for the translation. Translated by Penguin Piper on DLSite: https://www.dlsite.com/maniax/work/=/product_id/RJ01163052.html/ If you liked this work, then please support the artist & translator by purchasing it yourself if you can!
If he had paid attention, he could have realized the app never stated the person being influenced by it would vent their sex drive on the one using the app. Basically, it was clear from almost the very start that she was interested in him.